Transformer cooling device
By using blower devices and Bernoulli's principle in the transformer cooling device, the problems of low cooling efficiency and waste of energy of air-cooled transformers are solved, and a more efficient transformer cooling effect is achieved.
Patent Information
- Application Number
- CN202421990821.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-16
AI Technical Summary
During long-term operation of existing air-cooled transformers, the cooling efficiency is reduced due to the heat generated by the fan, and energy waste is caused.
By setting up a blower device in the transformer cooling device, the air flow is stimulated into the air duct, and the air pressure difference is generated inside and outside the box using the Bernoulli principle, and the external air is introduced to cool the air flow, thereby improving the cooling efficiency of the transformer.
It effectively improves the cooling efficiency of the transformer, reduces energy waste, and further improves the cooling effect by optimizing the design such as the use of air ducts, heat sinks and filter devices.
Smart Images
Figure CN223051966U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a transformer cooling device. Background Art
[0002] As a device connecting networks of different voltage levels, a power transformer is an extremely important component in the power system and is widely used in various aspects such as power generation, power transmission, and power distribution in the power system. With the increase in the capacity of the transformer, the generated loss increases accordingly, and the heat generated cannot meet the cooling requirements by the heat radiation of the radiator of the transformer itself. Therefore, air-cooled transformers appear, that is, the air convection of the fin radiator of the transformer is increased by a fan to improve the cooling effect.
[0003] However, the fan will also generate a large amount of heat during long-term operation, resulting in the air flow agitated by the fan becoming hot air, which will reduce the cooling efficiency of the transformer and cause a certain amount of energy waste. Content of the Utility Model
[0004] In view of the deficiencies of the prior art, the utility model provides a transformer cooling device that agitates air flow into the air duct through a blowing device, the air flow cools the transformer, and at the same time, according to Bernoulli's principle, a pressure difference is generated inside and outside the box body. Driven by the air flow, the air outside the box body enters the box body through the air inlet and cools the air flow, improving the cooling efficiency of the transformer, which is simple, efficient, safe and reliable, and convenient to operate.
[0005] The utility model is realized through the following technical solutions. A transformer cooling device is provided, which includes a box body, and the transformer is arranged inside the box body; an air inlet and an air outlet are opened on the box body, the air inlet and the air outlet are respectively located at both ends of the transformer, a air duct is formed between the transformer and the inner wall of the box body, and the air duct is communicated with a blowing device through the air inlet; an air inlet connected to the air duct is opened on the box body, and the opening of the air inlet faces the air flow direction in the air duct; the blowing device is used to agitate air flow into the air duct, the air flow cools the transformer, and at the same time, according to Bernoulli's principle, a pressure difference is generated inside and outside the box body. Driven by the air flow, the air outside the box body enters the box body through the air inlet and cools the air flow, improving the cooling efficiency of the transformer.
[0006] As an optimization, the air inlet opens towards the extending direction of the air duct, and the air inlet is communicated with the output end of the blowing device through a duct, and the cross-sectional area of the air inlet is respectively smaller than the cross-sectional area of the duct and the cross-sectional area of the air duct; the air flow is pressurized through the duct and the air inlet to increase the air flow velocity, increase the pressure difference inside and outside the box body, accelerate the air replacement speed inside the box body, and improve the cooling efficiency of the transformer.
[0007] As an optimization, heat dissipation fins extending along the extending direction of the air duct are fixedly arranged on the transformer; the heat dissipation fins are used to increase the heat dissipation efficiency of the transformer and improve the cooling efficiency of the transformer.
[0008] As an optimization, a filtering device A is arranged at the input end of the air blowing device, and the edge of the filtering device A is attached to the inner wall of the input end of the air blowing device; the filtering device A is used to remove impurities such as dust in the air to avoid affecting the cooling efficiency of the transformer.
[0009] The beneficial effects of the present utility model are as follows: air flow is agitated into the air duct through the air blowing device, and the air flow cools the transformer. At the same time, according to Bernoulli's principle, an air pressure difference is generated inside and outside the box body. Driven by the air flow, the air outside the box body enters the box body through the air inlet and cools the air flow, improving the cooling efficiency of the transformer; the air flow is pressurized through the air guide pipe and the air inlet, increasing the air flow velocity, increasing the air pressure difference inside and outside the box body, accelerating the air replacement speed inside the box body, and improving the cooling efficiency of the transformer; the heat dissipation fins are used to increase the heat dissipation efficiency of the transformer and improve the cooling efficiency of the transformer; the filtering device A is used to remove impurities such as dust in the air to avoid affecting the cooling efficiency of the transformer. Description of the Drawings
[0010] Figure 1 is a schematic structural diagram of the present utility model;
[0011] Figure 2 is a top view sectional view of the present utility model;
[0012] As shown in the figure:
[0013] 1. Box body, 2. Transformer, 3. Air duct, 4. Air blowing device, 5. Air inlet, 6. Air guide pipe, 7. Heat dissipation fins, 8. Filtering device A, 9. Filtering device B, 10. Rain shelter, 11. Air guide plate, 101. Air inlet, 102. Air outlet. Detailed Embodiments
[0014] To clearly illustrate the technical features of this solution, the following describes this solution through specific embodiments.
[0015] Such as Figure 1 and Figure 2The transformer cooling device of the present utility model shown in the figure includes a box body 1, and a transformer 2 is arranged inside the box body 1; an air inlet 101 and an air outlet 102 are opened on the box body 1, and the air inlet 101 and the air outlet 102 are respectively located at both ends of the transformer 2. A air duct 3 is formed between the transformer 2 and the inner wall of the box body 1, and the air duct 3 is connected to a blowing device 4 through the air inlet 101; an air inlet 5 communicating with the air duct 3 is opened on the box body 1, and the opening of the air inlet 5 faces the flowing direction of the air flow in the air duct 3; the air duct 3 extends in the vertical direction, the air outlet 102 is located at the top of the air duct 3, and the air inlet 101 is located at the bottom of the air duct 3. Since the air heated by the transformer 2 rises, the air in the box body 1 automatically rises, and the positions of the air outlet 102 and the air inlet 101 reduce energy consumption; a rain shelter 10 is fixedly arranged directly above the box body 1, and the middle of the rain shelter 10 is high and the periphery is low; a wind guiding plate 11 is fixedly arranged directly below the rain shelter 10, the wind guiding plate 11 is inclined upward along the extending direction of the air duct 3, and the bottom of the wind guiding plate 11 is located inside the box body 1, and the top of the wind guiding plate 11 is located outside the box body 1; the blowing device 4 is a prior art, and the blowing device 4 can adopt a blower; the air inlet 101 is connected to the output end of the blowing device 4; a filtering device B9 is arranged at the air inlet 5, and the edge of the filtering device B9 is attached to the inner wall of the air inlet 5.
[0016] Start the blowing device 4, and the blowing device 4 blows air into the air duct 3 through the air inlet 101. The air flow flows along the air duct 3 and cools the transformer 2; as the air flow flows, the air pressure difference between the inside and outside of the box body 1 increases, and the air outside the box body 1 enters the air duct 3 through the air inlet 5 and merges with the air flow. The temperature of the air flow decreases and the cooling of the transformer 2 is accelerated; the air flow that has completed cooling flows out through the air outlet 102.
[0017] As Figure 1 shown, the air inlet 101 opens towards the extending direction of the air duct 3, and the air inlet 101 is connected to the output end of the blowing device 4 through a guide air duct 6. The cross-sectional area of the air inlet 101 is respectively smaller than the cross-sectional area of the guide air duct 6 and the cross-sectional area of the air duct 3.
[0018] Start the blowing device 4, and the blowing device 4 blows air into the guide air duct 6. The air flow enters the air duct 3 through the air inlet 101, the air pressure increases and the air flow velocity increases.
[0019] As Figure 1 and Figure 2 shown, heat dissipation fins 7 extending along the extending direction of the air duct 3 are fixedly arranged on the transformer 2; the heat dissipation fins 7 are arranged in sequence around the transformer 2; the air duct 3 is located between the heat dissipation fins 7.
[0020] The heat generated by the transformer 2 is conducted to the heat dissipation fins 7, and the air flow flows in the air duct 3 and takes away the heat on the heat dissipation fins 7.
[0021] As Figure 1The input end of the blower device 4 shown is provided with a filtering device A8, and the edge of the filtering device A8 is arranged in close contact with the inner wall of the input end of the blower device 4; the filtering device A8 is a prior art.
[0022] Start the blower device 4, and the air passes through the filtering device A8 and enters the blower device 4 through the input end of the blower device 4, and dust and other impurities in the air are filtered out by the filtering device A8.
[0023] During the actual production process, start the blower device 4, and the air passes through the filtering device A8 and enters the blower device 4 through the input end of the blower device 4, and dust and other impurities in the air are filtered out by the filtering device A8; the blower device 4 agitates the air flow into the guide air duct 6, and the air flow enters the air duct 3 through the air inlet 101, the air flow pressure increases and the air flow velocity increases; the heat generated by the transformer 2 is conducted to the heat sink 7, the air flow flows in the air duct 3 and takes away the heat on the heat sink 7, and the transformer 2 cools down; as the air flow flows, the air pressure difference between the inside and outside of the box body 1 increases, the air outside the box body 1 enters the air duct 3 through the air inlet 5 and converges with the air flow, the air flow temperature decreases and accelerates the cooling of the transformer 2; the air flow that has completed cooling flows out through the air outlet 102.
[0024] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not a limitation to the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also belong to the protection scope of the claims of the present utility model.
Claims
1. A transformer cooling device, comprising a box (1), a transformer (2) being arranged in the box (1); an air inlet (101) and an air outlet (102) being provided on the box (1), the air inlet (101) and the air outlet (102) being respectively located at two ends of the transformer (2), an air duct (3) being formed between the transformer (2) and the inner wall of the box (1), and the air duct (3) being connected to a blast device (4) through the air inlet (101); characterized in that: An air inlet (5) connected to the air duct (3) is provided on the box body (1), and the opening of the air inlet (5) faces the direction of air flow in the air duct (3).
2. The transformer cooling device according to claim 1, characterized in that: The air inlet (101) opens in the extension direction of the air duct (3), and the air inlet (101) is connected to the output end of the air blowing device (4) through the air duct (6), and the cross-sectional area of the air inlet (101) is respectively smaller than the cross-sectional area of the air duct (6) and the cross-sectional area of the air duct (3).
3. The transformer cooling device according to claim 1, characterized in that: The transformer (2) is fixedly provided with a heat sink (7) extending along the extension direction of the air duct (3).
4. The transformer cooling device according to claim 1, characterized in that: A filter device A (8) is provided at the input end of the air blowing device (4), and the edge of the filter device A (8) is arranged to fit the inner wall of the input end of the air blowing device (4).